package com.mybatis.basic.utils;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class IdEntityCardUtil {

	/**
	 * 判断18位身份证是否正确
	 * @param idCard
	 * @return
	 */
	public static boolean is18ByteIdCardComplex(String idCard){
		Pattern pattern1 = Pattern.compile("^(\\d{6})(19|20)(\\d{2})(1[0-2]|0[1-9])(0[1-9]|[1-2][0-9]|3[0-1])(\\d{3})(\\d|X|x)?$");
		Matcher matcher = pattern1.matcher(idCard);
		int[] prefix = new int[]{7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};
		int[] suffix = new int[]{ 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2 };
		if(matcher.matches()){
			Map<String, String> cityMap = initCityMap();
			if(cityMap.get(idCard.substring(0,2)) == null ){
				return false;
			}
			int idCardWiSum=0; //用来保存前17位各自乖以加权因子后的总和
			for(int i=0;i<17;i++){
				idCardWiSum+=Integer.valueOf(idCard.substring(i,i+1))*prefix[i];
			}
			int idCardMod=idCardWiSum%11;//计算出校验码所在数组的位置 
			String idCardLast=idCard.substring(17);//得到最后一位身份证号码  
			//如果等于2，则说明校验码是10，身份证号码最后一位应该是X
			if(idCardMod==2){
				if(idCardLast.equalsIgnoreCase("x")){
					return true;
				}else{
					return false;
				}
			}else{
				//用计算出的验证码与最后一位身份证号码匹配，如果一致，说明通过，否则是无效的身份证号码  
				if(idCardLast.equals(suffix[idCardMod]+"")){
					return true;
				}else{
					return false;
				}
			}
		}
		return false;
	}

	private static Map<String, String> initCityMap(){
		Map<String, String> cityMap = new HashMap<String, String>();
		cityMap.put("11", "北京");
		cityMap.put("12", "天津");
		cityMap.put("13", "河北");
		cityMap.put("14", "山西");
		cityMap.put("15", "内蒙古");

		cityMap.put("21", "辽宁");
		cityMap.put("22", "吉林");
		cityMap.put("23", "黑龙江");

		cityMap.put("31", "上海");
		cityMap.put("32", "江苏");
		cityMap.put("33", "浙江");
		cityMap.put("34", "安徽");
		cityMap.put("35", "福建");
		cityMap.put("36", "江西");
		cityMap.put("37", "山东");

		cityMap.put("41", "河南");
		cityMap.put("42", "湖北");
		cityMap.put("43", "湖南");
		cityMap.put("44", "广东");
		cityMap.put("45", "广西");
		cityMap.put("46", "海南");

		cityMap.put("50", "重庆");
		cityMap.put("51", "四川");
		cityMap.put("52", "贵州");
		cityMap.put("53", "云南");
		cityMap.put("54", "西藏");

		cityMap.put("61", "陕西");
		cityMap.put("62", "甘肃");
		cityMap.put("63", "青海");
		cityMap.put("64", "宁夏");
		cityMap.put("65", "新疆");  

		cityMap.put("71", "台湾");
		cityMap.put("81", "香港");
		cityMap.put("82", "澳门");
		cityMap.put("91", "国外");
		return cityMap;
	}
}
